Plow



Apr 924 1 BROWN PLOW ori inal Filed Dec, 22. 1919 4 Shuts-Sheet 2 April 8 1924.

'r. BROWN PLOW Original Filed DEC. 22. 1919 4 Sheets-Sheet 3 Q W?! a as;

T. BROWN PLOW April 8, 1924;

Original Filed Dc. 22. 1919 4 Sheets-Sheet 4 I .lnvzn art zzr i VVi/naae Patented Apr. 8, 1924.

UNITED STATES PATENT OFFICE.

THEOPHILUS BROWN, 01 MOLINE, ILLINOIS, ASSIGNOR TO' DEERE COMPANY, OF

MOLINE, ILLINOIS, 'CORPQRATION E lLLINOIS.

rLow.

Application filed December 22,1919, Serial No. 346,613. :Benewcd March 19, 1923.

T 0 all whom it may concern:

Be 1t known that I, THEOPHILUS BROWN,

a citizen of the United States, residing at the following is a specification, reference be-' ing had therein to the accompanying drawmg. I

My invention relates to Iower lift plows, and has for its object to simplify the construction and operation of the power lift mechanism without impairing its efficiency.

Referring to thedrawingsin which similar numerals indicate identicalipartsee 'Figui'e 1 is a plan view olfla wheeled'aplow embodyingmy invention. V

Figure 2 is a side elevation with .the plow raised. 1 v 29 Figure 3 is a side elevation with the plow lowered into operative position.

Figure 4 isa view of the lifting mechanism taken from the furrowward side er the landwheel and showing the partsinthe position they assume when the plow is do wn.

Figure 5 is a similar view to Figured with the parts in the position they assume when the plow is rais i I Figure 6 is an enlargedview of "Figure 5 showing, in dotted lines, the clutch parts.

Figure 7, is a section on the line7 7i-.0,f Figure-6; v '.1 Figure 8 is an enlarged details'ection illustrating the clutch parts, and

Figure 9 is a section on the line9+-r- 9 of Figure 8. '9 f' The frame comprises plow beams 1 and 2 spaced apart and rigidly connected together by braces 3, 4 and 5. A clevis G'issecured to each beam, and connected to the clevises is a draw bar 7 from which extend draft bars 8 for attachment to a tractor in any desired manner. On the downwardly bent ends of the beams 1 and 2 aremountedplow bodies 9 and 10. .Rockably journaled beams, 1 and 2 is an axle hi -ing -ahoril Qntal portion 11 and downwardlyle tendili 'PlQ-l tions 12 and 13. Theporti g o in a spindle 14 on. which o1irnaleda furrow wheel 15, and theportion 13 terminates in a spindle 16 extend-inglinwardly t-OWm-d the frame an having:jioumfled her mi a len 1 :1 9h l fi1?; 9

in bearings on the traction power'of the wheel 17 is utilized to raise the plow is as follows; the hub of a the land-wheel l'l' is extended and carries, preferably integral therewith, an annular gear 18 which projects partially within a casing 19,;its projection therein being fixed by the hub 20 of the casing 19 contacting with the inner face of the annular gear 18. 1

Within the casing 19, and preferably in tegral therewith, is a stud 21 upon which is rockably 'mounted a bellcrank having diametrically opposed arms 22 and 23,011 the arm 7231s mounted a roller 24: which is adapted to engage Withany one-of the j v notchesin the annnlar gear 18. -To the arm j 221s conneeted one end eta coiled spring-25, the. opposite end of which is secured to a stud 26 on the'inner face. of-the casing 19. .Anarm 27 "of the bell crank extends, sub- .stantia'llyflat a right angle to the arms 22 and 23, through a slot 28 in the periphery of the casing 19 and has aconcave face as shown. I

Rigidly mounted, intermediate its ends,

onthe horizontal portion 11 of the axle, is a lever 29 .011 the lower endfof'which is pivotally mounted, intermediate its ends, a rocking lever 30. y A bar. 31 is also pivoted on the lever opposite theflever' 29 and between-the. lower ends of the latter and the end of. the bar 31 is mounted a. roller 32,

whichrests normally on the concave face of V the arm 27 and holds the bell crank in the positionshown in Figure .8 so that the clutch '29 and exerts its forceto rockthe-lever 30 so that the roller 32will engage with the arm 27 of the bell crank. To the upperend of the lever 30 is connected a cable .33

.is out of operationand the wheel 17, is free extending forwardly to a tractor towhich the plow is connected. Am-134, connected to the upper, end-10f the lever. 29, extends rear which the-rear 1 wheel .35 is controlled inthe A S1111 gear36 is preferably integral with V theleasing 119 and meshes with a planet gear 37lmeun edon a stub "shaftBS. journaled in a bearing 39" which is preferably integral w th 1 9, 993 91? 9' eer in i r 100. wardly to connection with themechanism by sleeve 41 adapted to turn on the spindle 16. One end of the sleeve 41 extends into a recess in the sun gear as shown in Figure 7, and the opposite end is in a similar recess in a castellated nut 42, on the endof the spindle 16, and which is held in place by a pin or cotter 43 which is inserted in an opening in the end of the spindle 16 and engages with notches in the nut A hand lever 44 is pivotally mounted on the beam 2 and is provided with the usual form of latch to engage with any one of a series of notches in a sector 45 secured on the beam 2. A link 46 is pivotally connected at one end to the frameiby means of the lever 44, between the pivot of the latter and the curve of the sector 45, and projects downwardly to and is pivotally connected with the ,link 40 by means of the stub shaft 38, its lower end being bifurcated for reception of the end portion of the stub shaft 38 to which the link is secured by a bolt or pin 47.

Presuming that the plow is down and in. operation, and it is desired to raise it, the lever30 is rocked byapull on the cable 33 releasing the roller'32 from the arm 27 of the bell crank; upon this action the bell crankis rockedby the tension of the spring 25 and the roller 24 enters the adjacent notch in the annular gear18 locking the latter and the casing 19 together so that they rotate with the wheel 17. The sun gear 36 being integral with the casing 19 accordingly rotates with the land wheel. a

The planet gear 37 does not rotate, but as it meshes with the sun gear 36, it is carried orbitally about said gear as the latter rotates with the wheel 17 thereby causing the lower end of the link 46 to revolve about the axis of the clutch members at half speed, and rocking-the crank axle 13 to liftthe plow frame.v This movement continuesuntil the arm 27 and roller32 again contact to rock the bell crank and disengage the roller 24'from a notch in the annular gear 18; at this time operation of raising the plow is complete and the parts are asshown in Figures 2, 5, 6, 7 and 8, the planet gear 37 being forward 0ftl1eaxis of the wheel 17, and the arm 27 of the bell crank, with which the roller 32 is in, contact, being rearward ofthe axis of the wheel 17.: Asbefore stated the sun gear is ,preferably integral with the casing and the bell crank is pivotally mounted on the casing 19, and as the planet gear 37, in mesh with the sun gear 36, does not rotate, it follows that when the plow is raised and the parts are in position, as shown and'described, the plow is locked in a raised position, "and asithe pivots of the links 40 and 46 are then substantially in alinement with the axis of the land wheel, the weight'of the frame is sustained by the lifting, devices. I 7

To lower the plow a pull upon the rope or depthio'f plowing; V V v I As shown in the drawings the axle rocks cable 33 rocks the lever 30, freeing the arm 27 of the bell crank fromthc roller 32, and the plow drops to the ground, the movement being so rapid that the roller 24 does not engage-With any one of the notches in the annular gear 18 until the plow contacts with the ground, whereupon the roller 24 engages with the adjacent notch in the annular gear 18 so that the traction powerof the wheel 17 becomes operative to force the plow into the ground until the arm 27 again engages with the'roller 32 on the lever 30, rocking the bell crank and separating the clutch parts so that the wheel 17 is 'freeto rotate without its tract-ion power being em ployed.

In the operationi'of raising'the plow as tion of the sun gear 36'and the 'landwheel 17, consequently the plow is raised bye complete revolution of the "landwheel 17 while the planet gear 37 travels only half way around the ,sungear'until its orbital movement is stopped by the separation of the clutch parts through which the traction power of the landwheel 17 is transmitted. By means of the lever 44 the effective point of connection of the lifting devices with the frame 'may be adjustedito regulate the to swing forwardly when the plow'jis lowered and swings rearwardly simultaneously with raising the plow, and the axis of the landwheel 17 is rearward of the axis of the furrowwheel 15; l do 'not limit myself to this constructionhowever, although I find it to be preferable. j

' What I claim is i V i 1. In a plow of'the class described,.the combinationof a beam frame, aplow body carried thereby, ground wheels for suppor ing said frame oneron; thelandside and gone on thegfurrow S1Cl6, the frame being vertically adjustable relatively to the said lll) wheel's, a clutchfortransmitting frame lifting power comprising ,a continually go 111g element at the axis of and driven by one of theground wheels, and an intermittingly acting positively rotating element at; the

axisof said ground wheel, a link, having; its

lower. end arranged to rotate around the axisoffsaid ground wheel and adapted to transmit power 'to theuframefand gear: "wheel mounted in fixed relation to said ground wheel and actuated by the intermittingly driven part of theclutch and a re,- ducing gearwheel driven by the aforesaid gearv and supported independently of the beam frame and "connected to the said link.

2 In" a plo'wo f the class described, the combination. of a beam frame, a plo'w'carried thereby, ground wh'eelsi for supporting said frame, two inclined crankarms rock ably mounted onthe'f'rame and respectively carrying said wheels at their lo'werends, a power tran'smitting mechanism which comp'rises' a continually going element driven by a ground wheel and an intermittingly actingoptionally rotating element both supported on the crank of the last said ground wheel and mounted at the 'axisfof said wheel, a gear wheel also at the axis of said ground wheel and actuated by the intermittingly acting clutch element, a second gear' wheel meshing'with the aforesaidgear-wheel and reducing its. speed, a rotary carrier for the second gear 'wheel'carried'by the lower end of the crank and a link arranged to bear against the frame and connected to said carrier at the axis of said second gear wheel.

3. In a wheeled plow, in which the traction power of one of the wheels to raise the plow is utilized through means connected at will with said wheel, said means including with said wheel and its axle the combination of a clutch having one of its members in constant connection with said wheel to rotate therewith, a second member loosely mounted on the axle and having a gear rigid therewith, means to connect said clutch members for simultaneous rotation, a non-rotating gear supported on the axle in constant mesh with the gear on the clutch member and adapted .to move orbitally about said gear, and a link connected with the non-rotating gear and the plow.

4. In a wheeled plow, in which the traction power of one of the wheels is utilized to raise the plow through means connected at will with said wheel, said means including a crank axle on which said wheel is journaled, the combination of a clutch having one of its members in constant connection with said wheel to rotate therewith, a second member loosely mounted on the axle and having a gear rigid therewith, means to connect said clutch members for simultaneous rotation, a support loosely journaled on the axle and carrying a non-rotating gear in constant mesh with the gear on the clutch member, and a link connected with saidnon-rotating gear and the plow, said nonrotating gear adapted to move orbitally about the gear on the clutch member in the operation of raising the plow.

5. In a plow, the combination of a plow carrying frame, a rear furrowwheel, a rockable crank axle on the frame, a front furrowwheel and a landwheel on said axle, a clutch having one of its members permanently connected with the landwheel, a gear forming part of a second clutch member loosely mounted on the axle, a non-rotatable gear supported on the axle in mesh with loosely carried on the axle'and includingua.

g'fii lf, a non rotatable gear supportedjo'nithe axle and in mesh with the gear on the clutch member, a' link connected with the non-rotatable gear and the frame, andmeans to operate the clutch whereby said gears are actuated by the traction power of the landwheel, the non-rotatable gear moving orbitally about the gear on the clutch member and raising the plow through its connection therewith.

7 In a plow, the combination of a plow carrying frame, supporting wheels therefor, a train of gears interposed between one of said wheels and the frame, a clutch oper-V able at will to actuate said gears by rotation of the wheel, said train including a gear permanently connected to a part of the clutch and in mesh with a non-rotating gear,

said non-rotating gear having an orbital movement about the gear on the clutch part when the clutch is operated, and a connec- .ti0'n between said non-rotating gear and'the frame whereby the plow is raised by the traction power of said wheel whenthe clutch is operated.

8. In a plow, the combination of a plow carrying frame, supporting wheels therefor,"

a train of gears interposed between one of said wheels and the frame, a clutch operable at will to actuate said gears by rotation of the wheel, said train including a gear permanently connected to apart of the clutch and in mesh with a non-rotating gear, said non-rotating gear having an orbital movement about the gear on the clutch part when the clutch is operated to raise the plow, a connection between said non-rotating gear and the frame whereby the plow is raised by a complete revolution of the said wheel and one half the orbital movement of the non-rotating gear.

9. In a plow of the class described, the

combination of a beamframe, a plow body carried thereby, ground wheels for supporting said frame, one on the land side and and with the frame, the pivots of said links being arranged to move substantially into dead center relation to each other and to the axis of said ground wheel when the frame is lifted, whereby said lifting means acts to sustain the weight of the lifted frame.

10. In a plow of the class described, the combination of a beam frame, a plow body carried thereby, ground wheels for supporting said frame, one on the land side and one on the furrow side, the frame being vertically adjustable relatively to said wheels, coacting clutch members for transmitting power from one of said ground wheels to lift the frame, a link, means comprising in termeshing gears for optionally causing one end of said link to rotate about the axis of said clutch members, and means connecting the other end of said link with said frame.

11. In a plow of the class described, the combination of a beam frame, a plow body carried thereby, ground wheels for support- 1 ing said frame, one on the land side and one on the furrow side, the frame being vertically adjustable relatively to said wheels, coacting clutch members for transmitting power from one of said ground wheels to lift the frame, a link, means comprising intermeshing gears for optionally causing one end of said link to rotate about the axis of said clutch members, and a lever mounted on the frame and connected with said link for adjustably connecting the other end thereof with said frame.

THEOPHILUS BROWN. 

